package view;

/**
 * @author Andrea
 * 
 */

/*
 * Very slight modifications were made; otherwise, it's reused straight from
 * Oracle's website.
 */

/*
 * Copyright (c) 1995, 2008, Oracle and/or its affiliates. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   - Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 *   - Neither the name of Oracle or the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
import javax.swing.*;
import javax.swing.plaf.basic.BasicButtonUI;
import java.awt.*;
import java.awt.event.*;
import java.util.ArrayList;
import java.util.List;
import java.util.ResourceBundle;

/**
 * Component to be used as tabComponent; Contains a JLabel to show the text and
 * a JButton to close the tab it belongs to
 */

public class Tabs extends JPanel {
	// Load resource bundles
	private static ResourceBundle myViewLabels = ResourceBundle
			.getBundle("resources.englishView");
	private static ResourceBundle myViewSizes = ResourceBundle
			.getBundle("resources.viewSizes");

	private static final long serialVersionUID = 1L;
	private final JTabbedPane pane;
	private final List<TabInnerPanel> myInnerPanels;
	public static final ArrayList<ArrayList<String>> tabHistories = new ArrayList<ArrayList<String>>();
	private final int tabButtonSize = Integer.parseInt(myViewSizes
			.getString("TabButton"));
	private Canvas myCanvas;
	private final int delta = 6;
	private SwingView mySwingView;

	public Tabs(final JTabbedPane pane, final List<TabInnerPanel> innerPanels,
			SwingView swingView) {

		// Unset default FlowLayout' gaps
		super(new FlowLayout(FlowLayout.LEFT, 0, 0));
		mySwingView = swingView;

		// Create an initial Inner Panel & Canvas
		Canvas initialCanvas = new Canvas(new Dimension(Integer
				.parseInt(myViewSizes.getString("CanvasWidth")), Integer
				.parseInt(myViewSizes.getString("CanvasHeight"))));
		TabInnerPanel initialInnerPanel = new TabInnerPanel(initialCanvas);
		mySwingView.setCanvas(initialCanvas);
		myInnerPanels = new ArrayList<TabInnerPanel>();
		myInnerPanels.add(initialInnerPanel);

		if (pane == null) {
			throw new NullPointerException("TabbedPane is null");
		}

		this.pane = pane;
		// this.myInnerPanels = myInnerPanels;
		setOpaque(false);

		// Make JLabel read titles from JTabbedPane
		JLabel label = new JLabel() {
			private static final long serialVersionUID = 1L;

			@Override
			public String getText() {
				int i = pane.indexOfTabComponent(Tabs.this);
				if (i != -1) {
					return pane.getTitleAt(i);
				}
				return null;
			}
		};

		add(label);

		// add more space between the label and the button
		label.setBorder(BorderFactory.createEmptyBorder(0, 0, 0, 5));

		// tab button
		JButton closeButton = new TabCloseButton();
		JButton addButton = new TabAddButton();
		add(closeButton);
		add(addButton);

		// add more space to the top of the component
		setBorder(BorderFactory.createEmptyBorder(2, 0, 0, 0));
	}

	private class TabCloseButton extends JButton implements ActionListener {
		private static final long serialVersionUID = 1L;

		public TabCloseButton() {
			setPreferredSize(new Dimension(tabButtonSize, tabButtonSize));

			// Make the button looks the same for all Laf's
			setUI(new BasicButtonUI());

			// Make it transparent
			setContentAreaFilled(false);

			// No need to be focusable
			setFocusable(false);
			setBorder(BorderFactory.createEtchedBorder());
			setBorderPainted(false);

			// Making nice rollover effect we use the same listener for all
			// buttons
			addMouseListener(buttonMouseListener);
			setRolloverEnabled(true);

			// Close the proper tab by clicking the button
			addActionListener(this);
		}

		@Override
		public void actionPerformed(ActionEvent e) {
			int i = pane.indexOfTabComponent(Tabs.this);
			if (i != -1) {
				pane.remove(i);
			}
		}

		// We don't want to update UI for this button
		@Override
		public void updateUI() {
		}

		// paint the cross
		@Override
		protected void paintComponent(Graphics g) {
			super.paintComponent(g);
			Graphics2D g2 = (Graphics2D) g.create();

			// shift the image for pressed buttons
			if (getModel().isPressed()) {
				g2.translate(1, 1);
			}
			g2.setStroke(new BasicStroke(2));
			g2.setColor(Color.BLACK);

			if (getModel().isRollover()) {
				g2.setColor(Color.MAGENTA);
			}

			g2.drawLine(delta, delta, getWidth() - delta - 1, getHeight()
					- delta - 1);
			g2.drawLine(getWidth() - delta - 1, delta, delta, getHeight()
					- delta - 1);
			g2.dispose();
		}
	}

	private class TabAddButton extends JButton implements ActionListener {
		private static final long serialVersionUID = 1L;

		public TabAddButton() {
			setPreferredSize(new Dimension(tabButtonSize, tabButtonSize));

			// Make the button looks the same for all Laf's
			setUI(new BasicButtonUI());

			// Make it transparent
			setContentAreaFilled(false);

			// No need to be focusable
			setFocusable(false);
			setBorder(BorderFactory.createEtchedBorder());
			setBorderPainted(false);

			// Making nice rollover effect we use the same listener for all
			// buttons
			addMouseListener(buttonMouseListener);
			setRolloverEnabled(true);

			// Close the proper tab by clicking the button
			addActionListener(this);
		}

		@Override
		public void actionPerformed(ActionEvent e) {

			myCanvas = new Canvas(new Dimension(Integer.parseInt(myViewSizes
					.getString("CanvasWidth")), Integer.parseInt(myViewSizes
					.getString("CanvasHeight"))));
			TabInnerPanel newPanel = new TabInnerPanel(myCanvas);
			myInnerPanels.add(newPanel);
			int indexOfNewPanel = (myInnerPanels.size()) - 1;
			tabHistories.add(new ArrayList<String>());
			pane.add(myViewLabels.getString("TabTitle"), newPanel);
			pane.setTabComponentAt(pane.getTabCount() - 1, new Tabs(pane,
					myInnerPanels, mySwingView));
		}

		// We don't want to update UI for this button
		@Override
		public void updateUI() {
		}

		// Paint the cross
		@Override
		protected void paintComponent(Graphics g) {
			super.paintComponent(g);
			Graphics2D g2 = (Graphics2D) g.create();

			// Shift the image for pressed buttons
			if (getModel().isPressed()) {
				g2.translate(1, 1);
			}

			g2.setStroke(new BasicStroke(2));
			g2.setColor(Color.BLACK);

			if (getModel().isRollover()) {
				g2.setColor(Color.MAGENTA);
			}

			g2.drawLine(delta - 1, getHeight() / 2, getWidth() - delta,
					getHeight() / 2);
			g2.drawLine(getWidth() / 2, delta - 1, getWidth() / 2, getHeight()
					- delta + 1);
			g2.dispose();
		}
	}

	private final static MouseListener buttonMouseListener = new MouseAdapter() {
		@Override
		public void mouseEntered(MouseEvent e) {
			Component component = e.getComponent();
			if (component instanceof AbstractButton) {
				AbstractButton button = (AbstractButton) component;
				button.setBorderPainted(true);
			}
		}

		@Override
		public void mouseExited(MouseEvent e) {
			Component component = e.getComponent();
			if (component instanceof AbstractButton) {
				AbstractButton button = (AbstractButton) component;
				button.setBorderPainted(false);
			}
		}
	};

	private int getActiveTab() {
		int i = pane.indexOfTabComponent(Tabs.this);
		return i;
	}

	private ArrayList<ArrayList<String>> getAllHistories() {
		return tabHistories;
	}

	public void updateActiveHistory(ArrayList<String> current) {
		HistoryArea.changeActiveHistory(current);
	}

	private void updateTabHistory(String input) {
		tabHistories.get(getActiveTab()).add(input);
	}

	protected List<TabInnerPanel> getInnerPanels() {
		return myInnerPanels;
	}
}